Unexpected beam truncation due to `BEAM_SIZE` parameter in DOSXYZnrc

[ftessier]

In the DOSXYZnrc documentation, BEAM_SIZE is mentioned for the input line where NCASE, IWATCH, TIMMAX, INSEED1, INSEED2 etc. have to be specified, in record 13 (or record 9, if NMED = 0).

BEAM_SIZE Beam size for a square field for the dose calculation This parameter is only used by sources 2,3 and 4 (default to 100 cm for a 100x100 cm square field).

This suggest that this parameter has no influence when using isource = 8, but it actually does have an influence. The default is 100 cm square, which is pretty large but for some reason we had it set to 5 cm and this truncated some of our beams. Just thought you would like to know the manual maybe needs updating, or BEAM_SIZE was perhaps not meant to influence isource = 8?

(Acknowledgement to Frank Verhaegen for reporting this issue)